1154393793779 has 2 divisors, whose sum is σ = 1154393793780. Its totient is φ = 1154393793778.

The previous prime is 1154393793769. The next prime is 1154393793809. The reversal of 1154393793779 is 9773973934511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1154393793779 - 2¹² = 1154393789683 is a prime.

It is a super-2 number, since 2×1154393793779² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1154393793769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577196896889 + 577196896890.

It is an arithmetic number, because the mean of its divisors is an integer number (577196896890).

Almost surely, 2^{1154393793779} is an apocalyptic number.

1154393793779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154393793779 is an equidigital number, since it uses as much as digits as its factorization.

1154393793779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 135025380, while the sum is 68.

The spelling of 1154393793779 in words is "one trillion, one hundred fifty-four billion, three hundred ninety-three million, seven hundred ninety-three thousand, seven hundred seventy-nine".